Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Tsunami review reinforces need for public preparedness

Media release, 30 September 2013

Tsunami review reinforces need for public preparedness

The Review of Tsunami Hazard in New Zealand (2013 Update), released today, reinforces the need for the public to understand and be prepared to respond to the threat of a tsunami.

Summary of the three key points arising from the review:

-  The probability of a tsunami has not changed but the maximum possible size of a tsunami in some areas has increased.

-  A large tsunami generated very close to New Zealand would arrive before an official warning could be issued or sirens activated. People must know that if they are at the coast and feel a strong earthquake (it is hard to stand up) or a weak earthquake that lasts for a minute or more, then get to high ground or go inland. Do not wait for an official warning.

-  Councils are responsible for warning communities and developing local plans.

The main areas where tsunami caused by local and regional sources pose a greater hazard than previously understood include:

-  the coasts of Northland, the north-west part of the Auckland region, Great Barrier Island, the Coromandel Peninsula, and the Bay of Plenty;

-  the East Cape of the North Island, and parts of the Wairarapa coast

-  Southland, Stewart Island, Fiordland and Westland.

Resulting from the review, the Ministry of Civil Defence and Emergency Management will be:

-  Emphasising the existing public messages about tsunami

http://www.civildefence.govt.nz/memwebsite.nsf/Files/Tsunami-national-signage/$file/tsunami-brochure-final.pdf

-  Encouraging councils and the 16 regional CDEM Groups to reinforce the national public messages with more specific local and regional information.

-  In October and November, with GNS Science, holding regional seminars for CDEM Groups and other response agencies. The seminars will be a chance to clarify the review and discuss matters related to tsunami warnings, including public preparedness and alerting.

The Director of Civil Defence Emergency Management, John Hamilton, said the Ministry commissioned GNS Science to carry out the review to update research published in 2005.

The review shows the maximum possible size of some local and regional tsunami is bigger than previously understood, though tsunami are no more likely. (A tsunami from a local earthquake would arrive in less than one hour, and that from a regional earthquake would arrive in one to three hours.)

This is because there is now more uncertainty about the maximum possible size of earthquakes on plate boundaries near those areas.

The review considers “return periods” of up to 2,500 years. That is, what is the biggest tsunami that can be expected in such a period?

The review incorporates research on the 2004 Indian Ocean, 2009 South Pacific, and 2011 Tohoku (Japan) tsunamis. All were produced by earthquakes substantially larger than had been considered likely at those locations. There are now believed to be fewer restrictions on maximum magnitudes of earthquakes that could be created on tectonic plate boundaries. New scientific models take into account this increased uncertainty about the maximum possible size of earthquakes.

It is now also known there was a similar tsunami in Japan in AD 869. This indicates the interval between the biggest earthquakes there is over 1,000 years.

The tectonic plates in Japan are converging twice as fast as those around New Zealand, which suggests the interval between the largest earthquakes on our local plate boundaries could be more than 2,000 years.

However, New Zealand has only a brief historical record of 200 years, which is not long enough to provide accurate reported information. During that time the country has experienced about 10 tsunami of 5 metres or more.

Download from www.civildefence.govt.nz

Review of Tsunami Hazard in New Zealand (2013 Update)

-  Maps showing the regional differences between the 2005 and 2013 reviews.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

TAIC: Final Report On Grounding Of MV Rena

The Transport Accident Investigation Commission (the Commission) concluded that the Rena grounding was not in any way attributable to the malfunction of any on-board machinery or equipment, including on-board navigational equipment. Factors that directly contributed to the grounding included the crew:

- not following standard good practice for planning and executing the voyage
- not following standard good practice for navigation watchkeeping
- not following standard good practice when taking over control of the ship. More>>

ALSO:

 
 

Parliament Adjourns:

Gordon Campbell:
On The Pakistan Schoolchildren Killings

The slaughter of the children in Pakistan is incomprehensibly awful. On the side, it has thrown a spotlight onto something that’s become a pop cultural meme. Fans of the Homeland TV series will be well aware of the collusion between sections of the Pakistan military/security establishment on one hand and sections of the Taliban of the other… More>>

ALSO:

Werewolf Satire:
The Politician’s Song

am a perfect picture of the modern politic-i-an:
I don’t precisely have a plan so much as an ambition;
‘Say what will sound most pleasant to the public’ is my main dictum:
And when in doubt attack someone who already is a victim More>>

ALSO:

Flight: Review Into Phillip Smith’s Escape Submitted To Government

The review follows an earlier operational review by the Department of Corrections and interim measures put in place by the Department shortly after prisoner Smith’s escape, and will inform the Government Inquiry currently underway. More>>

ALSO:

Intelligence: Inspector-General Accepts Apology For Leak Of Report

The Inspector-General of Intelligence and Security, Cheryl Gwyn, has accepted an unreserved apology from Hon Phil Goff MP for disclosing some of the contents of her recent Report into the Release of Information by the NZSIS in July and August 2011 to media prior to its publication. The Inspector-General will not take the matter any further. More>>

ALSO:

Drink: Alcohol Advertising Report Released

The report of the Ministerial Forum on Alcohol Advertising and Sponsorship has been released today, with Ministers noting that further work will be required on the feasibility and impact of the proposals. More>>

ALSO:

Other Report:

NSW Police Statement: Three Dead Following Martin Place Siege

About 2.10am (Tuesday 16 December), a confrontation occurred between police and a man who had taken a number of people hostage inside a café on Martin Place. Shots were fired during the confrontation. As a result, the 50-year-old man was pronounced dead after being taken to hospital. Another man, aged 34, and a woman, aged 38, were pronounced dead after being taken to hospital. More>>

ALSO:

Gordon Campbell: On The Sydney Siege (And DHB Budget Cuts)
Whenever the authorities bring a siege situation to an end, there will be criticism if – as has happened in Sydney – any hostages are seriously hurt, or killed... In the Sydney Morning Herald this morning, columnist Peter Hartcher raises a different point – that the initial public response had been noticeably different to the agitated reactions of politicians and the media. More>>

ALSO:

Leaked Cabinet Papers: Treasury Calls For Health Cuts

Leaked Cabinet papers that show that Government has been advised to cut the health budget by around $200 million is ringing alarm bells throughout the nursing and midwifery community. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news